Pneumatic wheel



Oct.' 16, 1923.

J. M. c. SEMERY PNEUMAT I C WHEEL Filed Feb. 4. 1919 Patented Oct. 16, 1923.

PATENT1 OFFICE.

JEAN MARIE CHARLES SEMERY, OF IPAVRIS, FRANCE.

` PNEUMATIC WHEEL.

Application filed February 4, 1919. SerialvNo. 275,039.

To zZZ who/m, t may concern:

Be it known that I, JEAN MARIE CHARLES SEMERY, a citizen of the French Republic, residing at Paris, 5 Rue de lUniversite, in

5 the Republic of France, have invented certain new and useful Improvements in Pneumatic Wheels; andI I do hereby declarethe following to b e a full, clear, and exact description of the invention, such as will en- !0 able others skilledin the art to' which it ap pertains to make and use the same.

The present invention relates -to improvements in pneumatic wheels and the improved wheel comprises one or more chambers filled with 'compressed air in the body ofthe wheel in combination with the usual pneumatic.

tire which is in communication with,the central air chamber or chambers.

The invention is illustrated in the accompanying drawings in cert-ain preferred forms and in these drawings, Figure l is a transverse section of one form o ywheel on the line .a-m in Figure 2, Figure 2 is a section in the plane of the wheel on the .line

g/-g/ in Figure 1*, Figures 3 and 4 are sectional views similar to Figure l" showing modiied forms of wheel and Figure 5 is a. similar section showing a duplicate .form `of wheel made in accordance with the linvention.

In the form shown in Figures 1` and 2, the body of the wheel is formed .of curved plates or discs 1 and 2 joined by the hub 9 and combined with the inner tube 3 within a pneumatic tirel casing 12. The space 4 b etween the dished discs 1 and 2 forms an air l chamber which communicates with the interior of the tube 3 through one or more openings at suitable intervals indicated in the drawings at 5 and 6. rlhe usual valve for introducing the compressed air into the chamber 4 is shown at 7. The rim of the wheel is shown in section at 8. v

In Figure 3 is shown a form of wheel in which the chamber 4 is enclosed by a flat disc 1a and a second disc 2a of a frusto conical form. These are joined by a moditied form of hub 9a and the valve for filling the compressed air is shown near the rim at 7a.

In Figure 4 the discs which form the wheel are .double convex as shown at lb and 2b and another modified form of hub is discs 1c and 2c and the whole is joined by a hub 9C. The two chambers are respectively filled through the valves-7c and 7d.

My invention covers the use of wheels made of anyA proper material, whether metallic or otherwise.

It will be seen that the volume of compressed air available is several times as great as with the ordinary pneumatic tire and the result will be an improved elasticity and a better deadening of shocks.

A pneumatic wheel comprising a hub, a rim, a casing on the rim, and discs connecting the hub and rim and forming therewith an air chamber adapted to contain compressed air, and a pneumatic tube mounted in the casing on said rim, the said rim and tube having aligned apertures to provide for communication between the air chamber and the tube.

In testimony whereof I atiix my signature in prence ot' two witnesses.

JEAN MARIE CHARLES SEMERY.

Witnesses LOUIS MAYER DALTROF, J oHN F. SIMoNs. 

